CVE-2025-66737CWE-23

CVE-2025-66737

Medium · published December 26, 2025

CVSS v3.1
4.3
EPSS
1%
Percentile
51.0
In the wild
Unconfirmed
What it is

Yealink T21P_E2 Phone 52.84.0.15 is vulnerable to Directory Traversal. A remote normal privileged attacker can read arbitrary files via a crafted request result read function of the diagnostic component.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00661 · 51.0th percentile
Weakness
CWE-23 · Relative Path Traversal
Published
2025-12-26T22:15Z
Affected products (1)
ProductVersionsFixed in
yealink/sip-t21\(p\)e2_firmwareall versions—
References (1)
https://drive.google.com/file/d/1MpxnCL4koKupqWWDmY3ljlybjIPD8ieD/view?usp=sharing · [email protected]
EPSS history
Timeline
  • 26 DEC 00:00Z
    Yealink T21P_E2 Phone 52.84.0.15 is vulnerable to Directory Traversal
    cvelistv5